+++ /dev/null
-/*
- * Copyright (c) 1995-2003, Index Data
- * See the file LICENSE for details.
- *
- * $Id: tcpip.c,v 1.59 2003-10-08 21:47:15 adam Exp $
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-
-#ifdef WIN32
-#else
-#include <unistd.h>
-#endif
-
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#if HAVE_OPENSSL_SSL_H
-#include <openssl/ssl.h>
-#include <openssl/err.h>
-#endif
-
-#include <yaz/comstack.h>
-#include <yaz/tcpip.h>
-#include <yaz/log.h>
-#include <yaz/nmem.h>
-
-#ifdef WIN32
-#else
-#include <netinet/tcp.h>
-#endif
-
-static int tcpip_close(COMSTACK h);
-static int tcpip_put(COMSTACK h, char *buf, int size);
-static int tcpip_get(COMSTACK h, char **buf, int *bufsize);
-static int tcpip_connect(COMSTACK h, void *address);
-static int tcpip_more(COMSTACK h);
-static int tcpip_rcvconnect(COMSTACK h);
-static int tcpip_bind(COMSTACK h, void *address, int mode);
-static int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
- int (*check_ip)(void *cd, const char *a, int len, int type),
- void *cd);
-static int tcpip_set_blocking(COMSTACK p, int blocking);
-
-#if HAVE_OPENSSL_SSL_H
-static int ssl_get(COMSTACK h, char **buf, int *bufsize);
-static int ssl_put(COMSTACK h, char *buf, int size);
-#endif
-
-static COMSTACK tcpip_accept(COMSTACK h);
-static char *tcpip_addrstr(COMSTACK h);
-static void *tcpip_straddr(COMSTACK h, const char *str);
-
-#if 0
-#define TRC(x) x
-#else
-#define TRC(X)
-#endif
-
-#ifndef YAZ_SOCKLEN_T
-#define YAZ_SOCKLEN_T int
-#endif
-
-/* this state is used for both SSL and straight TCP/IP */
-typedef struct tcpip_state
-{
- char *altbuf; /* alternate buffer for surplus data */
- int altsize; /* size as xmalloced */
- int altlen; /* length of data or 0 if none */
-
- int written; /* -1 if we aren't writing */
- int towrite; /* to verify against user input */
- int (*complete)(const unsigned char *buf, int len); /* length/comple. */
- struct sockaddr_in addr; /* returned by cs_straddr */
- char buf[128]; /* returned by cs_addrstr */
-#if HAVE_OPENSSL_SSL_H
- SSL_CTX *ctx;
- SSL_CTX *ctx_alloc;
- SSL *ssl;
-#endif
-} tcpip_state;
-
-#ifdef WIN32
-static int tcpip_init (void)
-{
- static int initialized = 0;
- if (!initialized)
- {
- WORD requested;
- WSADATA wd;
-
- requested = MAKEWORD(1, 1);
- if (WSAStartup(requested, &wd))
- return 0;
- initialized = 1;
- }
- return 1;
-}
-#else
-static int tcpip_init (void)
-{
- return 1;
-}
-#endif
-
-/*
- * This function is always called through the cs_create() macro.
- * s >= 0: socket has already been established for us.
- */
-COMSTACK tcpip_type(int s, int blocking, int protocol, void *vp)
-{
- COMSTACK p;
- tcpip_state *state;
- int new_socket;
-#ifdef WIN32
- unsigned long tru = 1;
-#endif
-
- if (!tcpip_init ())
- return 0;
- if (s < 0)
- {
- if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)
- return 0;
- new_socket = 1;
- }
- else
- new_socket = 0;
- if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
- return 0;
- if (!(state = (struct tcpip_state *)(p->cprivate =
- xmalloc(sizeof(tcpip_state)))))
- return 0;
-
- if (!((p->blocking = blocking)&1))
- {
-#ifdef WIN32
- if (ioctlsocket(s, FIONBIO, &tru) < 0)
- return 0;
-#else
- if (fcntl(s, F_SETFL, O_NONBLOCK) < 0)
- return 0;
-#ifndef MSG_NOSIGNAL
- signal (SIGPIPE, SIG_IGN);
-#endif
-#endif
- }
-
- p->io_pending = 0;
- p->iofile = s;
- p->type = tcpip_type;
- p->protocol = (enum oid_proto) protocol;
-
- p->f_connect = tcpip_connect;
- p->f_rcvconnect = tcpip_rcvconnect;
- p->f_get = tcpip_get;
- p->f_put = tcpip_put;
- p->f_close = tcpip_close;
- p->f_more = tcpip_more;
- p->f_bind = tcpip_bind;
- p->f_listen = tcpip_listen;
- p->f_accept = tcpip_accept;
- p->f_addrstr = tcpip_addrstr;
- p->f_straddr = tcpip_straddr;
- p->f_set_blocking = tcpip_set_blocking;
-
- p->state = new_socket ? CS_ST_UNBND : CS_ST_IDLE; /* state of line */
- p->event = CS_NONE;
- p->cerrno = 0;
- p->stackerr = 0;
-
-#if HAVE_OPENSSL_SSL_H
- state->ctx = state->ctx_alloc = 0;
- state->ssl = 0;
-#endif
-
- state->altbuf = 0;
- state->altsize = state->altlen = 0;
- state->towrite = state->written = -1;
- if (protocol == PROTO_WAIS)
- state->complete = completeWAIS;
- else
- state->complete = cs_complete_auto;
-
- p->timeout = COMSTACK_DEFAULT_TIMEOUT;
- TRC(fprintf(stderr, "Created new TCPIP comstack\n"));
-
- return p;
-}
-
-#if HAVE_OPENSSL_SSL_H
-
-COMSTACK ssl_type(int s, int blocking, int protocol, void *vp)
-{
- tcpip_state *state;
- COMSTACK p;
- yaz_log(LOG_LOG, "ssl_type begin");
-
- p = tcpip_type (s, blocking, protocol, 0);
- if (!p)
- return 0;
- p->f_get = ssl_get;
- p->f_put = ssl_put;
- p->type = ssl_type;
- state = (tcpip_state *) p->cprivate;
- if (vp)
- state->ctx = vp;
- else
- {
- SSL_load_error_strings();
- SSLeay_add_all_algorithms();
-
- state->ctx = state->ctx_alloc = SSL_CTX_new (SSLv23_method());
- if (!state->ctx)
- {
- tcpip_close(p);
- return 0;
- }
- }
- /* note: we don't handle already opened socket in SSL mode - yet */
- yaz_log(LOG_LOG, "ssl_type end");
- return p;
-}
-#endif
-
-int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
- int default_port)
-{
- struct hostent *hp;
- char *p, buf[512];
- short int port = default_port;
- unsigned tmpadd;
-
- if (!tcpip_init ())
- return 0;
- TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
- add->sin_family = AF_INET;
- strncpy(buf, str, 511);
- buf[511] = 0;
- if ((p = strchr(buf, '/')))
- *p = 0;
- if ((p = strchr(buf, ':')))
- {
- *p = 0;
- port = atoi(p + 1);
- }
- add->sin_port = htons(port);
- if (!strcmp("@", buf))
- add->sin_addr.s_addr = INADDR_ANY;
- else if ((hp = gethostbyname(buf)))
- memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
- sizeof(struct in_addr));
- else if ((tmpadd = (unsigned) inet_addr(buf)) != 0)
- memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
- else
- return 0;
- return 1;
-}
-
-void *tcpip_straddr(COMSTACK h, const char *str)
-{
- tcpip_state *sp = (tcpip_state *)h->cprivate;
- int port = 210;
-
- if (h->protocol == PROTO_HTTP)
- port = 80;
-
- if (!tcpip_strtoaddr_ex (str, &sp->addr, port))
- return 0;
- return &sp->addr;
-}
-
-struct sockaddr_in *tcpip_strtoaddr(const char *str)
-{
- static struct sockaddr_in add;
-
- if (!tcpip_strtoaddr_ex (str, &add, 210))
- return 0;
- return &add;
-}
-
-int tcpip_more(COMSTACK h)
-{
- tcpip_state *sp = (tcpip_state *)h->cprivate;
-
- return sp->altlen && (*sp->complete)((unsigned char *) sp->altbuf,
- sp->altlen);
-}
-
-/*
- * connect(2) will block (sometimes) - nothing we can do short of doing
- * weird things like spawning subprocesses or threading or some weird junk
- * like that.
- */
-int tcpip_connect(COMSTACK h, void *address)
-{
- struct sockaddr_in *add = (struct sockaddr_in *)address;
-#if HAVE_OPENSSL_SSL_H
- tcpip_state *sp = (tcpip_state *)h->cprivate;
-#endif
- int r;
-#ifdef __sun__
- int recbuflen;
- YAZ_SOCKLEN_T rbufsize = sizeof(recbuflen);
-#endif
- TRC(fprintf(stderr, "tcpip_connect\n"));
- h->io_pending = 0;
- if (h->state != CS_ST_UNBND)
- {
- h->cerrno = CSOUTSTATE;
- return -1;
- }
-#ifdef __sun__
- /* On Suns, you must set a bigger Receive Buffer BEFORE a call to connect
- * This gives the connect a chance to negotiate with the other side
- * (see 'man tcp')
- */
- if ( getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) < 0 )
- {
- h->cerrno = CSYSERR;
- return -1;
- }
- TRC(fprintf( stderr, "Current Size of TCP Receive Buffer= %d\n",
- recbuflen ));
- recbuflen *= 10; /* lets be optimistic */
- if ( setsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, rbufsize ) < 0 )
- {
- h->cerrno = CSYSERR;
- return -1;
- }
- if ( getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) )
- {
- h->cerrno = CSYSERR;
- return -1;
- }
- TRC(fprintf( stderr, "New Size of TCP Receive Buffer = %d\n",
- recbuflen ));
-#endif
- r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
- if (r < 0)
- {
-#ifdef WIN32
- if (WSAGetLastError() == WSAEWOULDBLOCK)
- {
- h->event = CS_CONNECT;
- h->state = CS_ST_CONNECTING;
- h->io_pending = CS_WANT_WRITE;
- return 1;
- }
-#else
- if (yaz_errno() == EINPROGRESS)
- {
- h->event = CS_CONNECT;
- h->state = CS_ST_CONNECTING;
- h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
- return 1;
- }
-#endif
- h->cerrno = CSYSERR;
- return -1;
- }
- h->event = CS_CONNECT;
- h->state = CS_ST_CONNECTING;
-
- return tcpip_rcvconnect (h);
-}
-
-/*
- * nop
- */
-int tcpip_rcvconnect(COMSTACK h)
-{
-#if HAVE_OPENSSL_SSL_H
- tcpip_state *sp = (tcpip_state *)h->cprivate;
-#endif
- TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
-
- if (h->state == CS_ST_DATAXFER)
- return 0;
- if (h->state != CS_ST_CONNECTING)
- {
- h->cerrno = CSOUTSTATE;
- return -1;
- }
-#if HAVE_OPENSSL_SSL_H
- if (sp->ctx)
- {
- int res;
-
- if (!sp->ssl)
- {
- sp->ssl = SSL_new (sp->ctx);
- SSL_set_fd (sp->ssl, h->iofile);
- }
- res = SSL_connect (sp->ssl);
- if (res <= 0)
- {
- int err = SSL_get_error(sp->ssl, res);
- if (err == SSL_ERROR_WANT_READ)
- {
- h->io_pending = CS_WANT_READ;
- return 1;
- }
- if (err == SSL_ERROR_WANT_WRITE)
- {
- h->io_pending = CS_WANT_WRITE;
- return 1;
- }
- h->cerrno = CSERRORSSL;
- return -1;
- }
- }
-#endif
- h->event = CS_DATA;
- h->state = CS_ST_DATAXFER;
- return 0;
-}
-
-#define CERTF "ztest.pem"
-#define KEYF "ztest.pem"
-
-static void tcpip_setsockopt (int fd)
-{
-#if 0
- int len = 4096;
- int set = 1;
-
- if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&set, sizeof(int)))
- {
- yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt TCP_NODELAY");
- }
- if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char*)&len, sizeof(int)))
- {
- yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt SNDBUF");
- }
- if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char*)&len, sizeof(int)))
- {
- yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt RCVBUF");
- }
-#endif
-}
-
-static int tcpip_bind(COMSTACK h, void *address, int mode)
-{
- struct sockaddr *addr = (struct sockaddr *)address;
-#ifdef WIN32
- BOOL one = 1;
-#else
- unsigned long one = 1;
-#endif
-
-#if HAVE_OPENSSL_SSL_H
- tcpip_state *sp = (tcpip_state *)h->cprivate;
- if (sp->ctx)
- {
- if (sp->ctx_alloc)
- {
- int res;
- res = SSL_CTX_use_certificate_file (sp->ctx, CERTF,
- SSL_FILETYPE_PEM);
- if (res <= 0)
- {
- ERR_print_errors_fp(stderr);
- exit (2);
- }
- res = SSL_CTX_use_PrivateKey_file (sp->ctx, KEYF,
- SSL_FILETYPE_PEM);
- if (res <= 0)
- {
- ERR_print_errors_fp(stderr);
- exit (3);
- }
- res = SSL_CTX_check_private_key (sp->ctx);
- if (res <= 0)
- {
- ERR_print_errors_fp(stderr);
- exit(5);
- }
- }
- TRC (fprintf (stderr, "ssl_bind\n"));
- }
- else
- {
- TRC (fprintf (stderr, "tcpip_bind\n"));
- }
-#else
- TRC (fprintf (stderr, "tcpip_bind\n"));
-#endif
-#ifndef WIN32
- if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
- &one, sizeof(one)) < 0)
- {
- h->cerrno = CSYSERR;
- return -1;
- }
-#endif
- tcpip_setsockopt(h->iofile);
- if (bind(h->iofile, addr, sizeof(struct sockaddr_in)))
- {
- h->cerrno = CSYSERR;
- return -1;
- }
- if (mode == CS_SERVER && listen(h->iofile, 3) < 0)
- {
- h->cerrno = CSYSERR;
- return -1;
- }
- h->state = CS_ST_IDLE;
- h->event = CS_LISTEN;
- return 0;
-}
-
-int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
- int (*check_ip)(void *cd, const char *a, int len, int t),
- void *cd)
-{
- struct sockaddr_in addr;
- YAZ_SOCKLEN_T len = sizeof(addr);
-
- TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
- if (h->state != CS_ST_IDLE)
- {
- h->cerrno = CSOUTSTATE;
- return -1;
- }
- h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
- if (h->newfd < 0)
- {
- if (
-#ifdef WIN32
- WSAGetLastError() == WSAEWOULDBLOCK
-#else
- yaz_errno() == EWOULDBLOCK
-#ifdef EAGAIN
-#if EAGAIN != EWOULDBLOCK
- || yaz_errno() == EAGAIN
-#endif
-#endif
-#endif
- )
- h->cerrno = CSNODATA;
- else
- h->cerrno = CSYSERR;
- return -1;
- }
- if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
- memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
- else if (addrlen)
- *addrlen = 0;
- if (check_ip && (*check_ip)(cd, (const char *) &addr,
- sizeof(addr), AF_INET))
- {
- h->cerrno = CSDENY;
-#ifdef WIN32
- closesocket(h->newfd);
-#else
- close(h->newfd);
-#endif
- h->newfd = -1;
- return -1;
- }
- h->state = CS_ST_INCON;
- tcpip_setsockopt (h->newfd);
- return 0;
-}
-
-COMSTACK tcpip_accept(COMSTACK h)
-{
- COMSTACK cnew;
- tcpip_state *state, *st = (tcpip_state *)h->cprivate;
-#ifdef WIN32
- unsigned long tru = 1;
-#endif
-
- TRC(fprintf(stderr, "tcpip_accept\n"));
- if (h->state == CS_ST_INCON)
- {
- if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
- {
- h->cerrno = CSYSERR;
-#ifdef WIN32
- closesocket(h->newfd);
-#else
- close(h->newfd);
-#endif
- h->newfd = -1;
- return 0;
- }
- memcpy(cnew, h, sizeof(*h));
- cnew->iofile = h->newfd;
- cnew->io_pending = 0;
- if (!(state = (tcpip_state *)
- (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
- {
- h->cerrno = CSYSERR;
- if (h->newfd != -1)
- {
-#ifdef WIN32
- closesocket(h->newfd);
-#else
- close(h->newfd);
-#endif
- h->newfd = -1;
- }
- return 0;
- }
- if (!(cnew->blocking&1) &&
-#ifdef WIN32
- (ioctlsocket(cnew->iofile, FIONBIO, &tru) < 0)
-#else
- (fcntl(cnew->iofile, F_SETFL, O_NONBLOCK) < 0)
-#endif
- )
- {
- h->cerrno = CSYSERR;
- if (h->newfd != -1)
- {
-#ifdef WIN32
- closesocket(h->newfd);
-#else
- close(h->newfd);
-#endif
- h->newfd = -1;
- }
- xfree (cnew);
- xfree (state);
- return 0;
- }
- h->newfd = -1;
- state->altbuf = 0;
- state->altsize = state->altlen = 0;
- state->towrite = state->written = -1;
- state->complete = st->complete;
- cnew->state = CS_ST_ACCEPT;
- h->state = CS_ST_IDLE;
-
-#if HAVE_OPENSSL_SSL_H
- state->ctx = st->ctx;
- state->ctx_alloc = 0;
- state->ssl = st->ssl;
- if (state->ctx)
- {
- state->ssl = SSL_new (state->ctx);
- SSL_set_fd (state->ssl, cnew->iofile);
- }
-#endif
- h = cnew;
- }
- if (h->state == CS_ST_ACCEPT)
- {
-#if HAVE_OPENSSL_SSL_H
- tcpip_state *state = (tcpip_state *)h->cprivate;
- if (state->ctx)
- {
- int res = SSL_accept (state->ssl);
- TRC(fprintf(stderr, "SSL_accept\n"));
- if (res <= 0)
- {
- int err = SSL_get_error(state->ssl, res);
- if (err == SSL_ERROR_WANT_READ)
- {
- h->io_pending = CS_WANT_READ;
- return h;
- }
- if (err == SSL_ERROR_WANT_WRITE)
- {
- h->io_pending = CS_WANT_WRITE;
- return h;
- }
- cs_close (h);
- return 0;
- }
- }
-#endif
- }
- else
- {
- h->cerrno = CSOUTSTATE;
- return 0;
- }
- h->io_pending = 0;
- h->state = CS_ST_DATAXFER;
- h->event = CS_DATA;
- return h;
-}
-
-#define CS_TCPIP_BUFCHUNK 4096
-
-/*
- * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
- * 0=connection closed.
- */
-int tcpip_get(COMSTACK h, char **buf, int *bufsize)
-{
- tcpip_state *sp = (tcpip_state *)h->cprivate;
- char *tmpc;
- int tmpi, berlen, rest, req, tomove;
- int hasread = 0, res;
-
- TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
- if (sp->altlen) /* switch buffers */
- {
- TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
- (unsigned) sp->altbuf));
- tmpc = *buf;
- tmpi = *bufsize;
- *buf = sp->altbuf;
- *bufsize = sp->altsize;
- hasread = sp->altlen;
- sp->altlen = 0;
- sp->altbuf = tmpc;
- sp->altsize = tmpi;
- }
- h->io_pending = 0;
- while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
- {
- if (!*bufsize)
- {
- if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
- return -1;
- }
- else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
- if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
- return -1;
-#ifdef __sun__
- yaz_set_errno( 0 );
- /* unfortunatly, sun sometimes forgets to set errno in recv
- when EWOULDBLOCK etc. would be required (res = -1) */
-#endif
- res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
- TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
- if (res < 0)
- {
- TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
- strerror(yaz_errno())));
-#ifdef WIN32
- if (WSAGetLastError() == WSAEWOULDBLOCK)
- {
- h->io_pending = CS_WANT_READ;
- break;
- }
- else
- return -1;
-#else
- if (yaz_errno() == EWOULDBLOCK
-#ifdef EAGAIN
-#if EAGAIN != EWOULDBLOCK
- || yaz_errno() == EAGAIN
-#endif
-#endif
- || yaz_errno() == EINPROGRESS
-#ifdef __sun__
- || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
-#endif
- )
- {
- h->io_pending = CS_WANT_READ;
- break;
- }
- else if (yaz_errno() == 0)
- continue;
- else
- return -1;
-#endif
- }
- else if (!res)
- return 0;
- hasread += res;
- }
- TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
- hasread, berlen));
- /* move surplus buffer (or everything if we didn't get a BER rec.) */
- if (hasread > berlen)
- {
- tomove = req = hasread - berlen;
- rest = tomove % CS_TCPIP_BUFCHUNK;
- if (rest)
- req += CS_TCPIP_BUFCHUNK - rest;
- if (!sp->altbuf)
- {
- if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
- return -1;
- } else if (sp->altsize < req)
- if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
- return -1;
- TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
- (unsigned) sp->altbuf));
- memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
- }
- if (berlen < CS_TCPIP_BUFCHUNK - 1)
- *(*buf + berlen) = '\0';
- return berlen ? berlen : 1;
-}
-
-
-#if HAVE_OPENSSL_SSL_H
-/*
- * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
- * 0=connection closed.
- */
-int ssl_get(COMSTACK h, char **buf, int *bufsize)
-{
- tcpip_state *sp = (tcpip_state *)h->cprivate;
- char *tmpc;
- int tmpi, berlen, rest, req, tomove;
- int hasread = 0, res;
-
- TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
- if (sp->altlen) /* switch buffers */
- {
- TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
- (unsigned) sp->altbuf));
- tmpc = *buf;
- tmpi = *bufsize;
- *buf = sp->altbuf;
- *bufsize = sp->altsize;
- hasread = sp->altlen;
- sp->altlen = 0;
- sp->altbuf = tmpc;
- sp->altsize = tmpi;
- }
- h->io_pending = 0;
- while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
- {
- if (!*bufsize)
- {
- if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
- return -1;
- }
- else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
- if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
- return -1;
- res = SSL_read (sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
- TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
- if (res <= 0)
- {
- int ssl_err = SSL_get_error(sp->ssl, res);
- if (ssl_err == SSL_ERROR_WANT_READ)
- {
- h->io_pending = CS_WANT_READ;
- break;
- }
- if (ssl_err == SSL_ERROR_WANT_WRITE)
- {
- h->io_pending = CS_WANT_WRITE;
- break;
- }
- if (res == 0)
- return 0;
- h->cerrno = CSERRORSSL;
- return -1;
- }
- hasread += res;
- }
- TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
- hasread, berlen));
- /* move surplus buffer (or everything if we didn't get a BER rec.) */
- if (hasread > berlen)
- {
- tomove = req = hasread - berlen;
- rest = tomove % CS_TCPIP_BUFCHUNK;
- if (rest)
- req += CS_TCPIP_BUFCHUNK - rest;
- if (!sp->altbuf)
- {
- if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
- return -1;
- } else if (sp->altsize < req)
- if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
- return -1;
- TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
- (unsigned) sp->altbuf));
- memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
- }
- if (berlen < CS_TCPIP_BUFCHUNK - 1)
- *(*buf + berlen) = '\0';
- return berlen ? berlen : 1;
-}
-#endif
-
-/*
- * Returns 1, 0 or -1
- * In nonblocking mode, you must call again with same buffer while
- * return value is 1.
- */
-int tcpip_put(COMSTACK h, char *buf, int size)
-{
- int res;
- struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
-
- TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
- h->io_pending = 0;
- h->event = CS_DATA;
- if (state->towrite < 0)
- {
- state->towrite = size;
- state->written = 0;
- }
- else if (state->towrite != size)
- {
- h->cerrno = CSWRONGBUF;
- return -1;
- }
- while (state->towrite > state->written)
- {
- if ((res =
- send(h->iofile, buf + state->written, size -
- state->written,
-#ifdef MSG_NOSIGNAL
- MSG_NOSIGNAL
-#else
- 0
-#endif
- )) < 0)
- {
- if (
-#ifdef WIN32
- WSAGetLastError() == WSAEWOULDBLOCK
-#else
- yaz_errno() == EWOULDBLOCK
-#ifdef EAGAIN
-#if EAGAIN != EWOULDBLOCK
- || yaz_errno() == EAGAIN
-#endif
-#endif
-#ifdef __sun__
- || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
-#endif
- || yaz_errno() == EINPROGRESS
-#endif
- )
- {
- TRC(fprintf(stderr, " Flow control stop\n"));
- h->io_pending = CS_WANT_WRITE;
- return 1;
- }
- h->cerrno = CSYSERR;
- return -1;
- }
- state->written += res;
- TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
- res, state->written, size));
- }
- state->towrite = state->written = -1;
- TRC(fprintf(stderr, " Ok\n"));
- return 0;
-}
-
-
-#if HAVE_OPENSSL_SSL_H
-/*
- * Returns 1, 0 or -1
- * In nonblocking mode, you must call again with same buffer while
- * return value is 1.
- */
-int ssl_put(COMSTACK h, char *buf, int size)
-{
- int res;
- struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
-
- TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
- h->io_pending = 0;
- h->event = CS_DATA;
- if (state->towrite < 0)
- {
- state->towrite = size;
- state->written = 0;
- }
- else if (state->towrite != size)
- {
- h->cerrno = CSWRONGBUF;
- return -1;
- }
- while (state->towrite > state->written)
- {
- res = SSL_write (state->ssl, buf + state->written,
- size - state->written);
- if (res <= 0)
- {
- int ssl_err = SSL_get_error(state->ssl, res);
- if (ssl_err == SSL_ERROR_WANT_READ)
- {
- h->io_pending = CS_WANT_READ;
- return 1;
- }
- if (ssl_err == SSL_ERROR_WANT_WRITE)
- {
- h->io_pending = CS_WANT_WRITE;
- return 1;
- }
- h->cerrno = CSERRORSSL;
- return -1;
- }
- state->written += res;
- TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
- res, state->written, size));
- }
- state->towrite = state->written = -1;
- TRC(fprintf(stderr, " Ok\n"));
- return 0;
-}
-#endif
-
-int tcpip_close(COMSTACK h)
-{
- tcpip_state *sp = (struct tcpip_state *)h->cprivate;
-
- TRC(fprintf(stderr, "tcpip_close\n"));
- if (h->iofile != -1)
- {
-#if HAVE_OPENSSL_SSL_H
- if (sp->ssl)
- {
- SSL_shutdown (sp->ssl);
- }
-#endif
-#ifdef WIN32
- closesocket(h->iofile);
-#else
- close(h->iofile);
-#endif
- }
- if (sp->altbuf)
- xfree(sp->altbuf);
-#if HAVE_OPENSSL_SSL_H
- if (sp->ssl)
- {
- TRC (fprintf(stderr, "SSL_free\n"));
- SSL_free (sp->ssl);
- }
- sp->ssl = 0;
- if (sp->ctx_alloc)
- SSL_CTX_free (sp->ctx_alloc);
-#endif
- xfree(sp);
- xfree(h);
- return 0;
-}
-
-char *tcpip_addrstr(COMSTACK h)
-{
- struct sockaddr_in addr;
- tcpip_state *sp = (struct tcpip_state *)h->cprivate;
- char *r = 0, *buf = sp->buf;
- YAZ_SOCKLEN_T len;
- struct hostent *host;
-
- len = sizeof(addr);
- if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
- {
- h->cerrno = CSYSERR;
- return 0;
- }
- if (!(h->blocking&2)) {
- if ((host = gethostbyaddr((char*)&addr.sin_addr, sizeof(addr.sin_addr),
- AF_INET)))
- r = (char*) host->h_name;
- }
- if (!r)
- r = inet_ntoa(addr.sin_addr);
- if (h->protocol == PROTO_HTTP)
- sprintf(buf, "http:%s", r);
- else
- sprintf(buf, "tcp:%s", r);
-#if HAVE_OPENSSL_SSL_H
- if (sp->ctx)
- {
- if (h->protocol == PROTO_HTTP)
- sprintf(buf, "https:%s", r);
- else
- sprintf(buf, "ssl:%s", r);
- }
-#endif
- return buf;
-}
-
-int static tcpip_set_blocking(COMSTACK p, int blocking)
-{
- unsigned long flag;
-
- if (p->blocking == blocking)
- return 1;
-#ifdef WIN32
- flag = 1;
- if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
- return 0;
-#else
- flag = fcntl(p->iofile, F_GETFL, 0);
- if(!(blocking&1))
- flag = flag & ~O_NONBLOCK;
- else
- flag = flag | O_NONBLOCK;
- if (fcntl(p->iofile, F_SETFL, flag) < 0)
- return 0;
-#endif
- p->blocking = blocking;
- return 1;
-}
projects / yaz-moved-to-github.git / blobdiff